I may be missing something here, if so, apologies.
It appears though that with VRBO API, a booking request does not come in via the quotes/inquiry tabs - it appears in the booking tab as a "pending". The issue is that tab does provide notifications when something is new. If we get an email from VRBO but for whatever reason it gets buried in our inbox we won't be aware there's a pending booking that needs to be responded to with a confirm.
Is there anyway to have VRBO inquiries go to Quotes/Inquiry instead, or to have the Booking tab display a notification when something is changed such as this, just like the other tabs do?
Currently Vrbo request to book come in as bookings, because they have the payment information tied to them. You'll see them with an hourglass and pending status in the bookings list, and you get a pending booking notification alert.
They don't currently trigger an unread count, though, since they're not coming in as a quote/inquiry -- that's a good idea to tie it in that way too, and something we'll consider for development.